Valve geae foe engines



(No Model.) 2 Sheets-Sheet 1.

W. VOIT.

VALVE GEAR PoR ENGINBm N0. 819,433. Patented June 2, .1885.

N. Pneus, Pham-Limogwher, wmmgm. D. c.

(No Modl.) 2 Sheets-Sheet 2.4

W. VOIT.

` VALVE GEAR EOE ENGINES. No. 319,433. Patented June 2, 1885.

N. FIERSy Phnloihhographer. Washiugnn. D. C.

WILLIAM VOIT, OF MAGDEBURG, PRUSSIA, GERMANY.

VALVENGEAR FOR ENGINES.

SPECEFICATION forming part of Letters Patent No. 319,433, dated June 2,1885.

Application filed February 12, 1885. (No model.)

To ctZZ whom it may concern:

Be it known that I, WILLIAM Voir, a subject of the King of Bavaria,residing at Magdeburg, Prussia, have invented new and usefulImprovements in Valve-Gears for Engines,

of which the following isa specification. V This invention has for itsobject to provide novel means for actuating` the auxiliary slidevalve ofa steam-engine by the movement of 1o the piston-rod; andit consists inthe combinanation of devices hereinafter described and claimed,reference being made to the accompanying drawings, in whieh- Figure 1 isa longitudinal section through I 5 the engine (steam-pump with side viewof the gear.) Fig. 2 is a section of the gear. Figs. 3 to 9 show in sideview and section several modifications of the gear.

Similar letters indicate corresponding parts. 2o The reciprocatingmotion of the piston-rod is to be transmitted to the rod of theauxiliary slide-valve in such a manner that the latter moves in adirection oppositethat ofthe piston rod. As the stroke ofthe smallslide-valve, compared with that of the piston,is proportionally a veryshort one, and the reversing must take place only when the piston isapproaching the end of its stroke, the following arrangement has beenmade: A coupling, K, is secured to 3o the piston-rod. This couplinggives the bar S3, 'fixed to the axis S, an oscillatory motion by meansof a socket, H,which is movable in a piece, M, secured by twocountersunk screws to the. coupling, and takes the bar S3 along 3 5 withit. The latter thereby slides to and fro in the socket. In consequenceof the oscillatory motion of the bar S3 the axis S2 is also put in anoscillatory motion,which is transmitted to the tappets P, and theselatter move to and 4o fro for actuating the regulating-rings Q, andconsequently move the auxiliary slide-valve. The steam-piston, Fig. 1,moves in the direction of the arrow, and the auxiliary slidevalve in theposition shown in the drawings is just beginning to open thecanal,whereupon the distributing-piston is moved to the other side andthe steam allowed to enter behind the steam-piston. The canal g mustsuddenly be opened, and the motion of the regulating-rings 5o Qtherefore be an accelerated one. The circular shape and disposition ofthe tappets P P by fixing them directly to the axis S2 is very importantfor obtaining this accelerated motion, as they move on theregulating-pieces Q from below to the top. To the lower end of the barSJ is fixed a screw-nut, X, provided with a washer, Y. When the pistonnow moves a little more to the left than shown in the drawings, Fig. 1,the socket H will strike against the washer Y. The socket H and the barS3 are stopped in their reciprocal motion and obliged to raise togetherin the slit YV, into which catches the4 peg Z, fixed to the socket. Theangular motion of the axis Sz and the rotation of the tappet P,respectively, the displacement of the auxiliary slid e-valve will herebyincrease and be accelerated. The gearing can be adjusted in twodifferent manners, first, by displacing the pieces Q on the auxliiaryvalve rod; and, secondly, by displacing the nut X, vrespectively byemploying a thicker or thinner washer,Y. The greater the distance isbetween the two pieces Q from each other the sooner the canal g will beopened. The nearer the nut 2X is adjusted toward the socket H, on thebar S, the sooner the socket will strike against the washer Y, and thesooner the quick motion of the auxiliary slide valve will take place.The two pieces Q, fixed by pinching-screws, maybe replaced by one pieceof the double width when the gearing has definitely been adjusted.

Figs. 3 and 4. of the annexed drawings show the construction of thecoupling K for large engines. The peg of the socket H is here lodged ina block, G, sliding in the slit.

Figs. 5 and 6 show a modification of the construction shown in Figs. 1:and 2. The socket H is east in one piece with the attached axis S2, andthe tappet P attached to the axis S2 in the same manner as formerly. Inthis arrangement the socket H turns only and does in the slit of thecoupling K as soon as the nut X with the washer Y will strike againstthe socket H. (See Fig. 1.)

In many cases where it is desirable to suppress the slit the arrangementshown in Figs. 7, 8, and 9 may advantageously be applied. In Fig. 8 thepeg Z is cast in one piece with the socket turning about thc peg Z, andin Fig. 9 the peg Z is screwed in the coupling K. The socket is herecorrespondingly bored out.

What l claim as new, and desire to secure by Letters Patent, is-d l 1.The combination, with the piston and not get out of its place, but thebar S raises now v ICO valve-rods, of a socket secured to the pistonrod,a regulating ring or rings on the valverod, a rocking axle havingdirectly attached to one end two tappets between which the regulating`ring or rings are arranged, and a swinging bar connected with therocking axle and loosely connected with the socket on the piston-rod,substantially as described.

2. The combination, with the piston and Valve rods, of the socket K onthe piston-rod, the rocking axle S2, provided at one end with twoattached tappets between which the regulating-rings Q on the valve-rodare connected, the swinging-bar S3 connected with the other end of therocking axle,and a pivotal connection, Z, between thelower end of theswinging bar and the socket on the piston rod for swinging the tappetsin the arcof a circle and causing them to act upon the regulating-ringsfrom the bottom toward the top thereof, substantially as described.

3. The combination, with the piston and valve rods, of the socketK onthe piston-rod provided with a slot, the socket H, having the attachedpin Z movable in the slot, the rock- 25 ing axle S, provided with twoattached tappets, P, between which the regulating-rings Q on thevalve-rod are arranged, and the swinging bar S3, secured to, the otherend of the rocking axle and passing through the socket 3o H forimparting to the valve an accelerated motion when the piston-rodapproaches the end of its stroke, substantially as described.

4. The combination,with the piston rod and valve-rod, of the socket K onthe piston-rod, 3 5 the rocking axle S2, provided at one end with -thetappets l?, the rocking bar S3, connected with the other end of the axleand loosely connected with the socket on the piston-rod, and

the adjustable screw-nut X and washer Yon 4o

